Why does my Sierra 1500’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my GMC engine sound different?

Strange engine sounds can be a sign something’s off in your GMC Sierra 1500. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 1500 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my GMC Sierra 1500 radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Sierra 1500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my Sierra 1500 engine to suddenly stop?

If your Sierra 1500 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for GMC Sierra 1500 repair?

Your local Firestone Complete Auto Care fixes GMC Sierra 1500 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2021 GMC Sierra 1500

Learn about

2021 GMC Sierra 1500 Trim Options

Select your GMC Sierra 1500 trim level to learn more about GMC-recommended engine repair. Even GMC Sierra 1500 parts will get older and change.

L4/2.7L

L6/3.0L

V6/4.3L

V8/5.3L

V8/6.2L

GMC Sierra 1500 Repairs and Services

Nothing lasts forever. Even your GMC Sierra 1500’s engine parts and components will change. We’re here to help when something stops working. Click on a repair below to learn more about 2021 GMC Sierra 1500 repairs.

We Care for GMC Sierra 1500 Engines

GMC Sierra 1500 engines are known for their reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 2021 GMC Sierra 1500 engine repairs. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC Sierra 1500 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 2021 GMC Sierra 1500 Check Engine Light Is On

If your Sierra 1500 check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your combustion, Possible causes can include a failing oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Bring your Sierra 1500 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine pinging noises, essential fluid leaks, or engine misfiring.

GMC Sierra 1500 Engine Repair

When your GMC Sierra 1500 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a service can wait, we’ll make sure you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for Sierra 1500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the timing chain or belt, engine oil seal, sensors, or another part.

2021 GMC Sierra 1500 Engine Q&A

Why does my Sierra 1500’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my GMC engine sound different? Strange engine sounds can be a sign something’s off in your GMC Sierra 1500. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 1500 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my GMC Sierra 1500 radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Sierra 1500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my Sierra 1500 engine to suddenly stop? If your Sierra 1500 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for GMC Sierra 1500 repair? Your local Firestone Complete Auto Care fixes GMC Sierra 1500 engines. Book an appointment today! We have thousands of locations across the country.